PK 56-6.1 (Kohoutek 3-51) Planetary Nebula in Sagitta

Located at: RA 20 hours 02 minutes 36 seconds, Dec +17 degrees 36 minutes 50 seconds

Size: 15" Magnitude: 14.7 photographic Class: --

North is up

West to the right


 14.5" f5 Newtonian reflector


 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56


 Lumicon Red filter, 148.5 minutes (27 x 0.5 {30 seconds} and 135 x 1.0 {60 seconds} minute subs), 09/30/2016; seeing 2.1-3.6 FWHM per CCDStack


CCDStack 2.93.6093.26774, Photoshop CS5.1


 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)


One more image in my south before the moon begins to interfere. I started with 30 seconds subs, but realized 60 seconds would be better. Of the 200 (total) subs I took, I used 27 of the 30-second, and 135 of the 60-second subs for this image. The planetary is marked on the cropped image.

View 200% crop.

See the CDS image/data.